Cylinder gauge



May 5, 1931. c. B. LITTERIO 1,804,383

CYLINDER GAUGE Filed Dec. 27, 1928 C flaring CAESAR B. LITTERIO, F PROVIDENCE,

UCTS COREOEA' OET,.OF PROVIDENCE, RHODE ISLAND,

Patented May 5, 1931 nsure srrss ISLAND I RHODE ISLAND, ASSIGNDR TO FEDERAL PROD- A CORPORATION OF RHODE CYLINDER GAUGE Application filed December 27, 1928. Serial No. 328,733.

The present invention relates to gauges,

and more particularly to gauges adapted to be utilized to measure the internal diameter of cylindrical. objects.

An important object of the present invention is the )rovision of a c linder auc'e a which will be simple in the extreme to manufacture and assemble, and which willhave a minimum number of parts.

Another important feature of the invention is the elimination of all springs in the cylinder-engaging portion of the dev1ce, theonly spring utilized being in the indicating member or reading portion of the'gauge.

A further feature of the invention resides in providing but-two contact points, one an adjustable point adapted to be secured in adjusted position, movable feeler, horizontally and co-axially arranged with respect to the fixed contact point.

This movable feeler is adapted to transmit movement to a vertically movable rod by means of a pivoted rocker interposed between said feeler and said rod. Vertical movement of the rod will transmitimovement to the plunger of a suitable gauge and will indicate, on the dial of the gauge, the accurate and precise internal measurements of the cylinder being measured.

Another feature of the invention resides in the particular construction of the base portion of my novel gauge, within which is housed and pivoted the rocker above mentioned.

A still further feature of the invention resides in a simple and efficient method of attaching the indicating element to the gauge.

The above and further features ofithe invention, details of construction, combinations of parts and advantages, will be herein after more fully pointed out, described and claimed.

Referring to the drawings, illustrating a preferred embodiment of the present invention,

Fig; 1 is a front elevation, partly in section. of mynovel gauge;

Fig. 2 is a side sectional elevation on the line 2-2 of Fig. 1;

and the other a freely point 3.

is threaded at its Fig. .3 is a vertical sectional view on the line 3-3 of Fig. 1; and

F g. (L is a cross-sectional view on the line l i of Fig. 1..

Referring now to the drawings, for a part cular description of the inventlon, its construction, assembly and operation, 1 designates a base member adapted t o be inserted in a cylinder to be measured. In this base 1 is a force washer 2, and adjustable through this washer 2 is a contact .point 3,'the length of the contact point 3, as clearly illustrated in the drawings, permitting a wide range of ad ustments. When the contact point 8 is adjusted to proper position, as illustrated in 1., in either full lines, or in dotted lines for example, it is firmly and securely retained in adjusted position by means of a knurled set screw 4 passing through threaded apertures in the, base 1 and also in the washer 2. I

I Co-aXially arranged with respect to the point 3 is a movable feeler 5 having a cupshaped portion 6. This feeler is slidable in an aperture 7 in the base 1 and through a force washer 8 for alining purposes. When the contact point 3 is in the position illustrated in full lines in 1, the movable feeler 5 will also slide over the inner end of said fli iovement of the feeler 5 inwardly will transmit movement to the rocker or bellcranl; lever 9 pivoted on a pin 10 and said rocker will, in turn, transmit said'movement to a vertically slidablerod 11. This rod 11 has bearings, at its lower end in the base 1, and at its upper end in a-force washer 12, to insure alinement and vertical travel of said rod. g o

On the transmission of movement to the rod 11, such movement will in turn be transmitted by said rod to the plunger 13 depending from an indicating element 1 1 and will i actuate the needle or indicator 15 to indicate on the dial 16 of said indicating element the precise internal measurement of the cylinder being measured;

The rod 11 is housed within a tube 17 which lower end into a boss-18 on the base 1, said tube carrying the force rocker maybe inserted, anda desirable, cylinder washer 12, and being split at its upper end as at 19. The indicating element 14 has a depending stem 20 which is inserted into the top of the tube 17 and surrounding said tube, at said split portion and just below said indicating element 14, is a split collar 21, screws 22 being provided-to clampsaid collar to-said sleeve or tube 17 and the pressure 01"? which will securely clamp the split end of said tube about the stem 20. a a

Provided in vone sideoi the base l is a threaded aperture 2", through which the rocker 9 is inserted. Thereupon the pin 10 c is applied, and a threaded plug 24- is threaded into the aperture 23. This plug 24:"1138 a central aperture adapted to fit over the pin 10, so that the pin 10 has a bearing in said plug onone side of the rocker 9 and in the base 1 on the other sidecof said rocker. The inner end of the plug 24 is provided with a reduced portion 25, the rocker 9 being confined between and guided by this reduced portion 25 on one sideand the inner surface 26 of the base .on the other side.

The spring which is in the indicating ele ment 14 will normally keep the plunger 13 depressed, and the same, plus the weight of the rod 11,-throughthe medium of the reel .er9, will normally hold thefeeler 5 in extended position. The rocker 9, being freely movable .on the pivot pin 10, willnot exert any frictional resistance to the :feeler 5, freely andinstantly transmitting movement from said teeler to the rod 11 and indicator 14.

It will thus be appreciated that I have devised a novel, .efficient, economical, simple, measuring gauge,,the ad vantages and utility of which will bereadily apparent to those skilled in the art,vand' since I believe said device is novel, I have claimed the same in the present application.

Vhile I have necessarily described my presentinvention somewhat in detail, it will be appreciated that I may vary the fined inthe fornrof claims as follows:

1. In a cylinder gauge ,.a base, a Contact adjustable in said base, means to secure said contact in adjusted position, a .movable feeler co-aXially arranged with respect'tosaid contact, indicator, actuating ed rocker insaid base int feeler. and said means, ,a pivotactuating means for. trans nittin movement from saidfeeler to said actuating means, said base .having an aperture at one side thereof through which said aperture,'the pivot for said rocker bearing n said plug and said .base.

2. In a cylinder gauge, a base, a contact adjustable 1n said base, means to secure said movement thereof by size,shape and arrangement of parts within reasonably erposed between said plug for said said aperture, the pivot for said rocker bearing in said plug and said base, said plug having a reduced portion on the inner end there oi,-and said rocker being confined between said reduced portion and said base,

In testimonywhereof, I have signed my name to this specification.

CAESAR B. LITTERIO. 

